* {
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "segoe ui", roboto, oxygen, ubuntu, cantarell, "fira sans", "droid sans", "helvetica neue", Arial, sans-serif;
    font-size: 16px;
    background: radial-gradient(circle, rgba(173, 216, 230, 1) 0%, rgba(135, 206, 235, 1) 100%);
}
body {
    background: radial-gradient(circle, rgba(173, 216, 230, 1) 0%, rgba(135, 206, 235, 1) 100%);
}
.login {
    width: 400px;
    background: radial-gradient(circle, rgba(173, 216, 230, 1) 0%, rgba(135, 206, 235, 1) 100%);
    box-shadow: 0 0 9px 0 rgba(0, 0, 0, 0.3);
    margin: 100px auto;
}
.login h1 {
    text-align: center;
    color: #0fb6d3;
    font-size: 24px;
    padding: 20px 0 20px 0;
    border-bottom: 1px solid #dee0e4;
}
.login form {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding-top: 20px;
}
.login form label {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 50px;
    height: 50px;
    background-color: #3274d6;
    color: #0fb6d3;
}
.login form input[type="password"], .login form input[type="text"] {
    width: 310px;
    height: 50px;
    border: 1px solid #dee0e4;
    margin-bottom: 20px;
    padding: 0 15px;
}
.login form input[type="submit"] {
    width: 100%;
    padding: 15px;
   margin-top: 20px;
    background-color: #3274d6;
    border: 0;
    cursor: pointer;
    font-weight: bold;
    color: #0fb6d3;
    transition: background-color 0.2s;
}
.login form input[type="submit"]:hover {
  background-color: #2868c7;
    transition: background-color 0.2s;
}
.error-message {
    color: red;
    font-weight: bold;
}
.h2 {
    color: rgb(13, 82, 172);
    font-weight: bold;
}

/* Diğer stiller burada devam eder */

body {
    display: flex;
    margin: 0;
    background: radial-gradient(circle, rgba(173, 216, 230, 1) 0%, rgba(135, 206, 235, 1) 100%);
}

.sidebar {
    width: 120px;
    height: 750px;
    background: radial-gradient(circle, rgba(173, 216, 230, 1) 0%, rgba(135, 206, 235, 1) 100%);
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 20px;
}

.sidebar-logo img {
    width: 80px; /* Logo boyutunu ayarlayın */
    height: auto; /* Genişliğe oranlı olarak yükseklik ayarlanır */
    margin-bottom: 20px;
}

.sidebar-nav {
    list-style: none;
    padding: 0;
}

.sidebar-nav li {
    margin-bottom: 10px;
}

.sidebar-nav a {
    text-decoration: none;
    color: white;
    font-weight: bold;
    transition: color 0.3s;
}

.sidebar-nav a:hover {
    color: #ffcc00;
}

.container {
    flex: 1;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    overflow-y: auto;
}

.hidden {
    display: none;
}

#calendarIframe {
    width: 1500px;
    height: 770px;
    border: none;
}